鄂尔多斯盆地华池地区三叠系延长组长4+5油层组沉积相研究
Special Oil & Gas Reservoirs（2010）
Abstract
以露头、岩心、测井曲线为基础,通过对研究区内的岩性特征、测井曲线形态及沉积微相特征进行分析,对该区的沉积特征有了更清楚的认识.认为华池地区延长组长4+5油层组主要由三角洲沉积体系和湖泊沉积体系组成,并进一步分为多种亚相.三角洲沉积体系既有北东向的曲流河三角洲沉积,也有南西向的辫状河三角洲沉积.这将有助于在更深层次上对长4+5油层组的储层特征与展布、油气富集规律、圈闭的成藏机理等问题的认识,为该区油气勘探提供一些依据.
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Key words
depositional system,subfacies,Huachi area,delta,lacus,sedimentary microfacies
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